Phnom Penh Weather & Climate: Best Time to Visit
Phnom Penh in Cambodia has a tropical moonson climate with a dry period from the end of November until the end of April. Rainy season starts in May and ends in November. Best time to visit this city temperature wise is in the European winter months from December until March.
Monthly Temperature in Phnom Penh
The climate in Phnom Penh remains fairly constant, offering very warm temperatures throughout the year. Average maximum daytime temperatures range from a very hot 37°C (99°F) in April, the warmest time of the year, to a very warm 33°C (91°F) during cooler months like January.
At night, you can expect temperatures ranging from 27°C (81°F) in April to around 23°C (73°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Phnom Penh
Phnom Penh is known for its substantial rainfall, with annual precipitation reaching 1415 mm (56 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, September it receives heavy rainfall, averaging 252 mm (9.9 in) of precipitation, recorded across 19 rainy days. In contrast, the driest month February brings less rainfall, with 12 mm (0.5 in) over 2 rainy days. For more details, please visit our Phnom Penh Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Phnom Penh
Seasonal changes in sunshine hours are quite dramatic in Phnom Penh. While March receives considerable daily sunshine with up to 9.0 hours, September marks the darkest time of the year, where sunshine is scarce with only 4.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Phnom Penh by Month
The relative humidity is high throughout the year in Phnom Penh.
The city experiences its highest humidity in September, reaching 84%. In February, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Phnom Penh
The mean wind speed varies between 2 m/s (4 knots) and 3 m/s (6 knots) throughout the year. It is lowest in January, February, May, September and October and highest during March, April, June, July, August, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Phnom Penh 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Phnom Penh
Phnom Penh enjoys temperatures ranging from 33°C (91°F) to 37°C (99°F) across the year. The dry season months of January, February, March and December provide the ideal time to visit, with clear skies and minimal precipitation.The distinct seasonal patterns make weather planning straightforward and reliable.
Visitors should expect the wet season during August, September and October, when heavy rainfall is characteristic. Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
